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Abstract:

During the last decade, global tidal models have spectacularly improved. However, they still have difficulties in resolving tides over continental shelves and near coastlines. This study of tidal propagation from the continental shelf to the North Patagonia Gulfs of Argentina applies a set of three nested high resolution models based on the Hamburg shelf ocean model (HamSOM), where particular attention was paid to the bathymetry and the coast line. The study is complemented by the use of all the tidal gauge and tidal current observations available. Simulations display good agreement with observations, permitting the construction of higher resolution and more reliable cotidal and corange charts. The tidal regime in the area is essentially semidiurnal and dominated by M2. This constituent propagates northward as a Kelvin wave and reaches the gulfs from the south. In their interior an important amplification is observed. Tidal currents are large at the mouths of the gulfs, and weaken toward their interior. The nonlinear transfer of energy from the semidiurnal to higher order harmonics was analyzed. This can be very important in the interior of the gulfs, particularly in Nuevo Gulf and in the northwestern San Matías Gulf, close to San Antonio. Energy flux and energy dissipation by bottom friction has been computed and indicate that this region dissipates 17% of the total energy dissipated on the Patagonian Shelf which, in turn, is one of the most dissipative areas of the world ocean. The Simpson-Hunter parameter computed from the simulations shows that in the mouth of the gulfs, particularly in San Matías and east of the Península de Valdés, the tides are energetic enough to overcome stratification and produce tidal fronts. The locations where tidal fronts are located are highly consistent with results from sea surface temperature and primary productivity data analyzed by other authors. © Coastal Education & Research Foundation 2011.

Registro:

Documento: Artículo
Título:Modeling ocean tides and their energetics in the North Patagonia Gulfs of Argentina
Autor:Moreira, D.; Simionato, C.G.; Dragani, W.
Filiación:Centro de Investigaciones del Mar y la Atmósfera (CIMA/CONICET-UBA), Intendente Güiraldes 2160, Ciudad Universitaria, Pabellón II-2do. Piso, (C1428EGA) Ciudad Autónoma de Buenos Aires, Argentina
Departamento de Ciencias de la Atmósfera y los Océanos, FCEN, Ciudad Universitaria, Pabellón I-2do. Piso, (C1428EGA) Ciudad Autónoma de Buenos Aires, Argentina
Servicio de Hidrografía Naval (SHN), Escuela de Ciencias del Mar (ESCM-INUN), Avda. Montes de Oca 2124, (C1270ABV) Ciudad Autónoma de Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina, Avda. Rivadavia 1917, (C1033AAJ) Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave:Argentina Continental Shelf; North Patagonia Gulfs; Patagonian Shelf; Tidal energetic; coast; coastal zone; continental shelf; Kelvin wave; ocean tide; primary production; sea surface temperature; stratification; tidal current; tidal cycle; Argentina; Atlantic Ocean; Patagonian Shelf
Año:2011
Volumen:27
Número:1
Página de inicio:87
Página de fin:102
DOI: http://dx.doi.org/10.2112/JCOASTRES-D-09-00055.1
Título revista:Journal of Coastal Research
Título revista abreviado:J. Coast. Res.
ISSN:07490208
CODEN:JCRSE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v27_n1_p87_Moreira

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Citas:

---------- APA ----------
Moreira, D., Simionato, C.G. & Dragani, W. (2011) . Modeling ocean tides and their energetics in the North Patagonia Gulfs of Argentina. Journal of Coastal Research, 27(1), 87-102.
http://dx.doi.org/10.2112/JCOASTRES-D-09-00055.1
---------- CHICAGO ----------
Moreira, D., Simionato, C.G., Dragani, W. "Modeling ocean tides and their energetics in the North Patagonia Gulfs of Argentina" . Journal of Coastal Research 27, no. 1 (2011) : 87-102.
http://dx.doi.org/10.2112/JCOASTRES-D-09-00055.1
---------- MLA ----------
Moreira, D., Simionato, C.G., Dragani, W. "Modeling ocean tides and their energetics in the North Patagonia Gulfs of Argentina" . Journal of Coastal Research, vol. 27, no. 1, 2011, pp. 87-102.
http://dx.doi.org/10.2112/JCOASTRES-D-09-00055.1
---------- VANCOUVER ----------
Moreira, D., Simionato, C.G., Dragani, W. Modeling ocean tides and their energetics in the North Patagonia Gulfs of Argentina. J. Coast. Res. 2011;27(1):87-102.
http://dx.doi.org/10.2112/JCOASTRES-D-09-00055.1